Do Fatigues And Tender Breast After Unprotected Intercourse Suggest Pregnancy?

Hello! My name is Liza.. Something have been bothering me since the month of february.. I had sexual intercourse with my bf a lot of times unprotected but he only came to me once.. He left to work on february 21 and i was left here.. I noticed, 1 or 2 weeks before he left, ive been experiencing things like extreme fatigue and tender, swollen breasts.. At first i though i was pregnant.. But then on the last week of february i had my period.. So i shook it off. Also at the last week of february i went to the hospital because of UTI. Had bacteria on my urine and also, my RBC is lower than my WBC. and was adviced to take antibiotics for a week. While i was on my antibiotics, i took some pregnancy tests just to be sure and it yield negative.. I skipped my period during March and April.. And then just recently, i am feeling some changes in my body.. Like extreme fatigue, dizzines, swollen legs, leg bruises, lack of apetite and also i feel my body being heavier and some lower back pain. Sometimes i caught myself out of breathe too and that i always have to support my back with my hands.. However , i only notice a slight change in my waist or stomach.. i dont think if its just fat or what. Is it possible that im pregnant? Thank you and have a good day.