Should I Undergo IVF As Per Reports?

Dear Ma'am

I ,Neha aged 27 years (housewife) and my husband Ravi aged 32 years married on 09 march 2008. We are trying for conceiving for the last 2 and half years but not succeeded. After one year of our marriage we consult doctor for that. They perform certain test such as SEMEN analysis of my husband which is found ok. Then I undergone several test such as

1.     Endometrium –result no evidence of tuberculosis on 29-07-2009
2.     TSH-OK
3.     PRL-OK
4.     HSG-on 13-07-2010 result are:-
•     Uterus is of normal size.
•     Uterine cavity showed smooth margin and normal contour.
•     No filling defect is seen inside
•     Both tubes are visualized.
•     Normal spillage of contrast is seen from both the tubes.
Doctor then suggest for letoval, folsafe but still not success
Thereafter our doctor suggest for IUI, I undergone for four circle for IUI but still not getting success, my ovalution is ok and my periods are normal and my doctors told me that my egg size 20 during every circle of IUI.

Then I undergone for Hystero-Laparoscopy on 07-04-2011- results are:-
Hysteroscopy –cavity normal, Bilateral ostia normal.
Curettage done. Sent for TBPCR which is ok
Lap –criss cross cavitations seen in the P.O.D probably endometriosis.
Bilateral ovaries polycystic . Drilling done. Bilateral tubes appear healthy.
Dye test=(Left) negligible spill seen with intravasation of dye.
(right) delayed spill after applying force to push dye.
For the last month i.e june, I have taken the medicine siphene 100mg, proctinal 1.25mg,folsafe, zincovit and autrin cap.

Please guided us what should I do, should I go for IVF if yes please guide and tell me what is the chances of getting pregnant .
With regards,

neha