PLEASE RESPOND! missed pills

Kylie
Hi everyone, 
So I am honestly quite bad at taking my pills, the only reason I take the pill is because I'm allergic to other forms... anyway I haven't taken it in about 3 weeks. But this isn't the first time I've forgotten so it's hard to tell when to expect my period now because I'm so irregular (my fault.) I have had unprotected sex in this time period, although he has not blantatly enjaculated in me, I'm still a bit concerned because according to my tracker I am two days late. Like I said, I'm irregular but still freaking out.. I attached the picture of my period lengths so y'all can see and maybe tell me when and if I should test. ALSO should I start taking the pill again or wait until after my next cycle to ends to get back on track?