Talk to Gynecologist on Irregular Periods

m married aur pichly 3 months se mere periods irregular hain,, phly delay ho rhy thy aur ab jldi ho gye hain. 15 march ko hue thy then 6 may aur abhi aj hue hn 20 may aur pain bhi ho rhi hai. is this normal or any issue there? and today i had intercourse tou kya us vja se b kuch ho skta hai means jldi induce ho jty ya just hormonal issues hain because phly tou mujy iss vja se ni hua kbi kuch... aur ab mujy kya krna chahiye ?