Tamoxifen on cycle

Been taking tamoxifen for a few weeks on my test only cycle, blood work shows my e2 levels are in check now I’ve got them but I was experiencing sensitive nipples so was advised to take the tamoxifen 20mg eod,
My head feels like it is pulsing either side sort of like a pressure, would stopping the tamoxifen be the correct option? And has anyone experienced this ? I’ll be getting my bloods done a week on Monday again