Sex followed by blacking out

So my husband and I woke up this morning and were both in the mood.

So we ending up having coitus. Well after I got up and felt so sick but tried to take a shower hoping it would help. Well I got out of the shower and felt so sick and started to black out. I say on the bed and my husband kept asking if I was on. I ran to the bathroom and sat on the floor. My husband brought my water and I just had to sit there. Never got sick and never blacked out.

Anyone have this happen before? I’m only 5weeks 4 days.