Ovulation symptoms/side effects while taking Clomid 50mg

Hi ladies, this is my first round of clomid 50mg and I took the pills CD 5-9. Super irritable and emotional towards the end of them by the way... yikes. Anyway, I'm on CD 16 and got s positive OPK this morning. I've had slight cramping the last few days - nothing painful - but tonight my left side is tender when i move certain ways or touch it without thinking of being gentle.... is this abnormal or a side effect of clomid? I know what clomid is supposed to do, so I was prepared for Discomfort,  but I'm just not sure if this might be a good sign? Or a problem? I'm REALLY hoping it works our first time...