How can you tell if you ovulate

Tiphanie

My cycle came last week n only lasted for two days I took the pregnancy test twice n they both came back negative so I took the ovulate test n that came back negative as well. So my question is how can I tell if I’m ovulating or not please someone help me out… with all of my pregnancy I never took an ovulation test to become pregnant I just got pregnant out of luck without tryna to get pregnant but since I’m tryna to get pregnant it’s very hard for me to conceive in pregnancy.