Irregular periods

I’m still breastfeeding (22months) Andy periods been irregular the past two months

18 dec

15 jan

13 feb

16 mar

12 apr

16 may

I’ve yet to get my period this month, but had pink tinted discharge three days ago. Had transparent-white discharge the next day. And then light brown tinted discharge yesterday but back to white discharge today?

I’ve been feeling lethargic and now have paranoia thinking could I be pregnant?

When should I do a home test to confirm? I only have one !

EDIT: Took the test & I am pregnant!