Helo Doctor.. Am 30days Late.. Did 2 Urine Tests At

helo doctor.. am 30days late.. did 2 urine tests at hm which came positive. after 3 days did another urine test bt this time negative! after 1 week i did another urine test and it resulted positive..went to see my gynae and did ultrasound which was positive as well. Doc told me to do blood test but unfortunately came out negative. gave another appoint after 2 weeks. went back there and ultrasound negative!!! i understand wats happening :-( he suggested to take primolut n tab. please give feedback as soon as possible.