HELP :$ may be pregnant

• I've been pregnant before when I was 16 but decided to have a abortion do to my situation... I don't remember having symptoms but I do remember taking 2 dollars store test. They came back negative but then went to a woman's health clinic not even a week later and I was 5 weeks pregnant.. ( little backround story ) 
• I know it's not the end of the month yet but my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> has always been right and I always get my period in the morning too 
I got my period 
•May 24th til 29th 
•June  18th til 24th
•So now in July I should have got my period the 15th so it said!! well no period came so then it told me today 22nd but still no period.. Now it's telling me the 29th :$ 
•On top of this I've been having some symptoms..
My breast are hard but not so sore 
I've been really dizzy and tired 
Only nauseous when I'm hungry 
Should I take a test or wait til this month is over?