Ttc after getting off depo in November

Brook

I was on the depo shot since I was 15 years old I am now 18 and will be 19 in July I got off the shot in November but when I was on the shot I would still get my period towards the end when I was about to go get another shot but it only lasted a day or two I’ve been off the shot since November and started having periods instantly but I have noticed I have been getting my period at least twice a month but there was one time my period lasted almost 3 weeks but this month it seems to be normal me and my bf have been trying to conceive and I’m ovulating right now how long should I wait to take a test I just got off my period last week 😇