Just need a little help!!!!

So where to begin alright according to this app I was Ovulating on January 2nd and hubby and I made love that day 😁😁 in that month my period was late 4 days and came on January 20th and lasted for 4 day and had light flow it usually lasts that long after giving birth to my now 3 year old son. Now my next ovulation started February 1st according to app and since January 3rd I have felt very emotional and wanting to break down to everything very moody, even started argument with hubby yesterday. This morning I woke up and felt very bloated and woke up with a light head ache. Also times apart all day today I keep feeling nauseous and weird. I have never felt like this before, could it be just because Im ovulating or what?